Does smoking cause or increase acne?

I'm not a smoker but my friend is.

Ciggerates
Weed
Drinking?

Does smoking cause or increase acne?

I'm not a smoker but my friend is.

Ciggerates
Weed
drinking?
No smoking doesn't cause acne,if your under the age of teenage you get acne,stress is mostly the cause of pimples or zits or whatever you want to call it,stress does a lot of things to people.

It will thin the skin though and delay healing.

Oh okay. Thank you.

I have read that there is no correlation between smoking and acne. Now there are conflicting studies out there.
Here is one study that says there is no correlation, but note that they defined smoking to mean at least one cigarette a week: Acne and smoking: is there a relationship? | BioMed Central - Mirror @ Uni Potsdam (http://bmc.ub.uni-potsdam.de/1471-5945-5-2/)

Although smoking doesn't cause acne, the skin of a smoker is less healthy and looks older – this is because the nicotine in tobacco smoke reduces the blood circulation to your skin and the amount of oxygen your skin gets. So there is something to consider there.